Journal of
Petroleum and Gas Engineering

  • Abbreviation: J. Petroleum Gas Eng.
  • Language: English
  • ISSN: 2141-2677
  • DOI: 10.5897/JPGE
  • Start Year: 2010
  • Published Articles: 107

Full Length Research Paper

Development of a new surfactant-polymer system and its implementation in Dagang oilfield

Hongyan Wang
  • Hongyan Wang
  • Geological and Scientific Research Institute, Shengli Oilfield, SINOPEC, Dongying 257015, PR China
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Brian Miller
  • Brian Miller
  • EnProTech, Houston, USA
  • Google Scholar


  • Article Number - 690EE9F8945
  • Vol.4(5), pp. 118-126, May 2013
  •  Accepted: 22 April 2013
  •  Published: 31 May 2013

Abstract

 

In this paper, a new surfactant–polymer enhanced oil recovery (EOR) system is investigated for the feasibility of injection in Dagang. The newSP flooding system has been designed and developed for Dagang oilfield with Dagang petroleum sulfonate (SLPS) as the primary ingredient. The dynamic behavior of the system and the interactions of the system components have been investigated through various methods, including dissipative particle dynamics (DPD) molecular modeling technology and dynamic interfacial-tension analysis. The results have shown a significant synergistic effect between sulfonate and nonionic surfactant. The interfacial tension (IFT) and its time to reach equilibrium could be dramatically decreased, suggesting a fast diffusion–adsorption characteristic of ionic surfactants as well as the high surface activity of nonionic surfactants. The SP flooding formulation was optimized. A pilot test has been carried out. The field trial provides useful information for the further large-scale application of the SP system in Dagang oilfield.

 

Key words: Surfactant-polymer flooding, sulfonate, interfacial tension, dynamic behavior, pilot field trial.